Ethernet not working with hubs

Since yesterday my macbook pro2010 (Lion) does not connect anymore throght ethernet on hub/router. Other computers still work without problems, with same router. I've also tried the same cable and it works great.
Using the same cable, when I directly plug the ethernet cable at office to a direct wall-plug it works.

I suggest you ask this in the Yosemite Forum

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    Message was edited by: Soriano

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